craftgrrl | Envirotex Epoxy spreading to much problem.

I paint it on the top of my wooden paddle and sides with a paint brush, then when I come back two days later, it's spread to the bottom of the paddle and now my news paper is epoxied to the wood. Also as it dries sometimes it dries thinner in spots than in others, even when I have tried to coat evenly.

Is the Epoxy spreading to the bottom side, because I painted the sides too, is that how it managed to spread onto the bottom, even when it wasn't painted there??

And what about the un even drying, even though it was spread evenly before drying?